Tiny home rules in Yuma, AZ — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
Yuma permits accessory dwelling units under Arizona HB 2570 (ARS §9-462.01) which requires cities to allow ADUs on single-family lots. Tiny homes on permanent foundations meeting building code are treated as ADUs. Tiny homes on wheels are classified as recreational vehicles and cannot serve as permanent residences.
Under ARS §9-462.01 (HB 2570, 2021), Yuma must allow ADUs on single-family residential lots. ADUs cannot be banned, and the city cannot require owner-occupancy or additional parking. ADU size must be at least 300 square feet. Tiny homes on permanent foundations that meet Yuma building code requirements are treated as ADUs or accessory buildings. Tiny homes on wheels (THOWs) are classified as recreational vehicles under city code and cannot be used as permanent dwellings. Yuma's desert climate and relatively affordable land make traditional site-built construction common. The city's Community Development Department handles ADU permitting at (928) 373-5175.
Unpermitted ADUs or using THOWs as permanent residences may result in code enforcement citations and required removal.
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See how Yuma's tiny homes rules stack up against other locations.
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